<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Vue监测数据改变的原理_数组</title>
   <!-- 引入Vue -->
   <script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>   
</head>
<body>
     <!-- 准备一个容器 -->
    <div id="root">
        <h1>学校信息</h1>
        <h2>学校名称：{{school.name}}</h2>
        <h2>学校地址：{{school.address}}</h2>
        <h2>校长是：{{school.leader}}</h2>
        <hr/>
        <h1>学生信息</h1>
        <button @click="addSex">添加一个性别属性，默认值是男</button>
        <h2>姓名：{{student.name}}</h2>
        <h2 v-if="student.sex">性别：{{student.sex}}</h2>
        <h2>年龄：真实{{student.age.rAge}}，对外{{student.age.sAge}}</h2>
        <h2>爱好</h2>
        <ul>
            <li v-for="(h, index) in student.hobby" :key="index">{{h}}</li>
        </ul>
        <h2>朋友们</h2>
        <ul>
            <li v-for="(f, index) in student.friends" :key="index">{{f.name}}--{{f.age}}</li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false;  // 阻止 vue 在启动时生成生产提示。
    
    // 创建Vue实例
    const vm = new Vue({
        el: '#root',
        data: {
        school:{
            name:'尚硅谷',
            address:'北京',
        },
          student:{
            name:'tom',
            // sex:'男',
            age:{
                rAge:40,
                sAge:18,
            },
            hobby:['游戏','小说','电视','蹦极'],
            friends:[
                {name:'jerry',age:35},
                {name:'tony',age:36},
            ]
          }
        },
        methods: {
            addSex(){
                // Vue.set(this.student,'sex','男')
                this.$set(this.student,'sex','男')
            }
        },
    })
</script>
</html>